/* 一像素下边框 */
@media only screen and (-webkit-min-device-pixel-ratio: 2) {
  .border-width-1px::before {
    transform: scaleY(0.5);
  }
}
@media only screen and (-webkit-min-device-pixel-ratio: 3) {
  .border-width-1px::before {
    transform: scaleY(0.33333);
  }
}
li,
ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
